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    {
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     "text": [
      "array('I')\n"
     ]
    }
   ],
   "source": [
    "## array, deque\n",
    "## 数组\n",
    "## array 和 list 的一个重要的区别，array 只能存放指定的数据类型\n",
    "## 官方文档\n",
    "## https://docs.python.org/3.6/library/array.html\n",
    "\n",
    "import array\n",
    "my_array = array.array(\"I\")\n",
    "# my_array.append(\"s\")\n",
    "print(my_array)"
   ]
  },
  {
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   "source": []
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